This chapter introduces a theoretically grounded pedagogical procedure of moral argumentation that aims to facilitate student teachers' learning of moral competencies during teacher education. Despite the essentiality of the moral aspects of teaching, they often remain implicit in the curricula and pedagogical practices of teacher education. Thus, there is a clear need to bring these aspects to the foreground and create possibilities for student teachers to elaborate them thoroughly during teacher education. Authentic cases capturing classroom realities and moral dilemmas at school as well as their systematic analysis and reflection from various lenses form the core of the procedure. Based on the results of the use of the procedure in the practice of teacher education, it promisingly fulfills the aims to demonstrate the moral core of teaching and teacher's central role in it for student teachers.